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LD1085CXX Datasheet(PDF) 1 Page - STMicroelectronics

Part # LD1085CXX
Description  3 A low-drop, adjustable positive voltage regulator
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LD1085CXX Datasheet(HTML) 1 Page - STMicroelectronics

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April 2008
Rev 8
1/16
16
LD1085CXX
3 A low-drop, adjustable positive voltage regulator
Features
■ Typical dropout 1.3 V (at 3 A)
■ Three terminal adjustable output voltage
■ Guaranteed output current up to 3 A
■ Output tolerance ± 2 % at 25 °C and ± 3 % in
full temperature range
■ Internal power and thermal limit
■ Wide operating temperature range -40 °C to
125 °C
■ Package available: DPAK
■ Pinout compatibility with standard adjustable
VREG
Description
The LD1085C is a low drop voltage regulator able
to provide up to 3 A of output current. Dropout is
guaranteed at a maximum of 1.5 V at the
maximum output current, decreasing at lower
loads. The LD1085C is pin to pin compatible with
the older 3-terminal adjustable regulators, but has
better performances in term of drop and output
tolerance.
A 2.85 V output version is suitable for SCSI-2
active termination. Unlike PNP regulators, where
a part of the output current is wasted as quiescent
current, the LD1085C quiescent current flows into
the load, so increase efficiency. Only a 10 µF
minimum capacitor is need for stability.
The device is supplied in DPAK. On chip trimming
allows the regulator to reach a very tight output
voltage tolerance, within ± 2 % at 25 °C.
DPAK
Table 1.
Device summary
Order codes
Packages
LD1085CDT-R
DPAK (tape and reel)
www.st.com


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